Folding electric wheelchair

Abstract

The utility model relates to the technical field of wheelchairs, in particular to a folding electric wheelchair which comprises a chassis, walking mechanisms are arranged at the two ends of the chassis, a first containing groove is formed in the top of the chassis, first supporting rods are rotationally connected to the two ends of the interior of the first containing groove, and a cushion is arranged above the chassis. The top ends of the two first supporting rods extend to the side face of the cushion and are rotationally connected with the cushion, a connecting rod is rotationally connected between the two first supporting rods, an electric push rod is rotationally connected to the side face of the connecting rod, and a second containing groove is further formed in the top of the base plate and is of a T-shaped structure. According to the electric wheelchair, the cushion can be buffered and damped through the buffer spring and the damper, so that when the electric wheelchair runs on a rugged road surface, the buffer spring can buffer the impact force generated by bumping of the electric wheelchair, the impact received by a user is reduced, and the use effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wheelchair technology field especially relates to a folding electric wheelchair. BACKGROUND

[0002] The electric wheelchair is a portable electric vehicle specially designed for people with difficulty in moving, which is driven by an electric motor to help users move in different environments.

[0003] The existing electric wheelchair is generally folding, and the seat cushion is supported or stored by the electric push rod and the supporting mechanism to reduce the volume when carrying. However, since there is no damping mechanism on the wheelchair, the violent bumping when the wheelchair walks on the rugged road will affect the user, and the use effect is poor. In addition, since the user usually sits on the wheelchair for a long time, the existing wheelchair does not have a massage mechanism, which affects the blood circulation of the user's hips and back, and the use effect is poor. Therefore, we propose a folding electric wheelchair. SUMMARY

[0004] The utility model aims at solving the above-mentioned shortcomings in the prior art and proposes a folding electric wheelchair.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a folding electric wheelchair is designed, which comprises a chassis, both ends of the chassis are provided with walking mechanisms, a first accommodating groove is formed in the top of the chassis, both ends of the first accommodating groove are rotatably connected with first supporting rods, a seat cushion is arranged above the chassis, the top ends of the two first supporting rods extend to the side surface of the seat cushion and are rotatably connected with the seat cushion;

[0006] A connecting rod is rotatably connected between the two first supporting rods, the connecting rod is rotatably connected with an electric push rod on the side surface, a second accommodating groove is further formed in the top of the chassis, the second accommodating groove is a "T" shaped structure, one end of the second accommodating groove is communicated with both sides of the first accommodating groove, a sliding block is arranged in the second accommodating groove, the other end of the electric push rod is rotatably connected with the sliding block;

[0007] Grooves are formed in both sides of the second accommodating groove, both ends of the sliding block extend into the grooves, and dampers are mounted in the grooves, one end of the damper is fixed on the side surface of the corresponding sliding block, and a buffer spring is further sleeved on the side surface of the damper, one end of the buffer spring is fixed on the end of the groove, and the other end of the buffer spring is fixed on the side surface of the sliding block;

[0008] The top end of the seat cushion is symmetrically provided with two fixed blocks, a backrest is rotatably connected between the two fixed blocks, a plurality of second air bags are mounted on the side surface of the backrest, a plurality of first air bags are mounted on the top of the seat cushion, adjacent two first air bags and adjacent two second air bags are connected through pipelines, and the first air bags and the second air bags are connected through a first flow guide pipe, one end of the first flow guide pipe is fixed on the side surface of the seat cushion, and the other end of the first flow guide pipe is fixed on the side surface of the backrest.

[0009] The top end of the chassis is provided with a mounting cover, a gas pump is mounted in the mounting cover, an air inlet end of the gas pump is connected with an air pipe, one end of the air pipe extends to the outside of the mounting cover, a second flow guide pipe is connected to the air outlet end of the gas pump, the other end of the second flow guide pipe extends to the outside of the mounting cover and is connected with the side surface of the first flow guide pipe, and an electromagnetic valve is mounted on the side surface of the second flow guide pipe.

[0010] Preferably, the walking mechanism includes two pairs of walking wheels arranged at both ends of the chassis, one pair of walking wheels is fixed to the chassis through a steering mechanism, and the other pair of walking wheels is connected with a driving motor at one end, and the driving motor is fixed in the mounting cover.

[0011] Preferably, the inside of the first accommodating groove is provided with a second support rod on both sides, the top of each second support rod is rotatably connected to the side surface of the seat cushion, and the first support rod and the second support rod are arranged alternately, the bottom end of each second support rod is rotatably connected with a connecting block, and the side surface of both ends of the first accommodating groove is provided with a strip-shaped sliding groove, one end of each connecting block extends into the corresponding strip-shaped sliding groove and is in sliding fit with the strip-shaped sliding groove.

[0012] Preferably, when the bottom of the seat cushion contacts the top of the chassis, the first support rod and the second support rod are located in the first accommodating groove, and the electric push rod and the connecting rod are located in the second accommodating groove.

[0013] Preferably, one end of each of the two fixed blocks is provided with a strip-shaped limiting plate, and when the backrest is rotated to a preset position, the edge of the strip-shaped limiting plate abuts against the side surface of the backrest.

[0014] Preferably, one side of each fixed block is connected with an armrest, and one end of the armrest extends above the seat cushion.

[0015] Preferably, the inside of the mounting cover is further provided with a control mainboard, and the control mainboard is connected with the electric push rod, the gas pump and the electromagnetic valve through wires.

[0016] Preferably, at least one battery groove is further provided on the top of the chassis, a storage battery is mounted in the battery groove, and the storage battery is connected with the control mainboard through wires.

[0017] A top cover is arranged at the opening of the top of the battery groove, the top cover covers the opening of the battery groove, and the edge of the top cover is fixed on the top of the chassis.

[0018] The design scheme proposed in this utility model has the following beneficial effects in application:

[0019] 1. The cushioning spring and damper can cushion and absorb shocks. When the electric wheelchair is traveling on rough roads, the cushioning spring can buffer the impact force generated by the bumps of the electric wheelchair, reduce the impact received by the user, and improve the user experience.

[0020] 2. The inflation and deflation of the first and second airbags can be controlled by the air pump and solenoid valve. In turn, the contraction and expansion of the first and second airbags can massage the user, increase blood circulation in the user's buttocks and back, and improve the effect of use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the electric push rod and buffer spring structure of this utility model;

[0024] Figure 4 This is a top view of the internal structure of the mounting cover of this utility model;

[0025] Figure 5 This is a side view of the structure of this utility model after folding.

[0026] In the diagram: 1. Chassis; 2. First receiving slot; 3. First support rod; 4. Seat cushion; 5. First airbag; 6. Armrest; 7. Backrest; 8. First guide pipe; 9. Strip-shaped limiting plate; 10. Second guide pipe; 11. Mounting cover; 12. Wheels; 13. Vent pipe; 14. Connecting block; 15. Second support rod; 16. Strip-shaped slide; 17. Second receiving slot; 18. Top cover; 19. Battery; 20. Battery slot; 21. Groove; 22. Sliding block; 23. Electric push rod; 24. Connecting rod; 25. Damper; 26. Buffer spring; 27. Drive motor; 28. Air pump; 29. ​​Control main board; 30. Solenoid valve; 31. Fixing block; 32. Second airbag. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] ReferenceFigures 1-5 The utility model provides a folding electric wheelchair, including chassis 1, the top one end of chassis 1 is equipped with mounting cover 11, and the inside of mounting cover 11 is also equipped with control mainboard 29, and control mainboard 29 is one of PCB circuit board or single-chip microcomputer circuit board.

[0029] As shown in Figure 1 And Figure 4 Two ends of chassis 1 are equipped with walking mechanism, and the specific mechanism of walking mechanism is that walking mechanism includes two pairs of walking wheels 12 arranged at both ends of chassis 1, one pair of walking wheels 12 is fixed on chassis 1 through steering mechanism, and the one end of the other pair of walking wheels 12 is connected with driving motor 27, driving motor 27 is fixed in the inside of mounting cover 11, and driving motor 27 is connected with control mainboard 29 through wire, and in actual use, walking wheel 12 can be driven to rotate through driving motor 27, and then chassis 1 can be moved.

[0030] As shown in Figure 1 And Figure 2 The top of chassis 1 is equipped with first accommodating groove 2, and the both ends of the inside of first accommodating groove 2 are rotatably connected with first support rod 3, and cushion 4 is arranged above chassis 1, and the top of two first support rods 3 is stretched to the side surface of cushion 4 and is rotatably connected with cushion 4, and connecting rod 24 is rotatably connected between two first support rods 3, and electric push rod 23 is rotatably connected to the side surface of connecting rod 24, and the top of chassis 1 is also equipped with second accommodating groove 17, and second accommodating groove 17 is in the shape of T, and one end of second accommodating groove 17 is connected with the two sides of first accommodating groove 2, and sliding block 22 is arranged in the inside of second accommodating groove 17, and the other end of electric push rod 23 is rotatably connected with sliding block 22, and electric push rod 23 is connected with controller through wire, and in actual use, first support rod 3 can be driven to rotate through the extension and contraction of electric push rod 23, and then cushion 4 can be lifted or moved downwards, so that cushion 4 can be lifted to be used by user when being used, and cushion 4 can be folded and stored when not being used, so as to reduce the occupied space and facilitate carrying.

[0031] As shown in Figure 1 And Figure 2 The both sides of the inside of first accommodating groove 2 are equipped with second support rod 15, and the top of second support rod 15 is rotatably connected to the side surface of cushion 4, and first support rod 3 and second support rod 15 are staggered, and the bottom one end of each second support rod 15 is rotatably connected with connecting block 14, and the both end side surfaces of first accommodating groove 2 are equipped with strip-shaped sliding groove 16, and one end of each connecting block 14 is stretched into corresponding strip-shaped sliding groove 16 and is slidably matched with strip-shaped sliding groove 16, and in actual use, second support rod 15 will rotate with the lifting of cushion 4, and then the bottom connecting block 14 of second support rod 15 will slide along strip-shaped sliding groove 16, so as to support cushion 4 and keep cushion 4 stable.

[0032] It should be noted that, as Figure 5 shown, when the bottom of the seat cushion 4 is in contact with the top of the chassis 1, the first support rod 3 and the second support rod 15 are both located in the first accommodating groove 2, and the electric push rod 23 and the connecting rod 24 are both located in the second accommodating groove 17, so that the electric wheelchair is reduced in size after folding, facilitating carrying.

[0033] As shown in Figure 2 and Figure 3 , the second accommodating groove 17 is provided with a groove 21 on both sides of the inside, and the two ends of the sliding block 22 extend into the groove 21, and the inside of the groove 21 is provided with a damper 25 at one end, one end of the damper 25 is fixed on the side of the corresponding sliding block 22, and a buffer spring 26 is sleeved on the side of the damper 25, one end of the buffer spring 26 is fixed on the end of the groove 21, and the other end of the buffer spring 26 is fixed on the side of the sliding block 22. In actual use, after the user sits on the seat cushion 4, pressure will be generated on the electric push rod 23 through the first support rod 3, and the electric push rod 23 will transmit the pressure to the damper 25 and the buffer spring 26. When the walking wheel 12 walks on the rough road, the buffer spring 26 will convert the impact force generated by the vibration of the chassis 1, thereby reducing the impact of the user receiving the bumps and improving the use effect.

[0034] As shown in Figure 1 , the top of the seat cushion 4 is provided with two fixed blocks 31 at one end, and the two fixed blocks 31 are rotatably connected with the backrest 7, and a plurality of second air bags 32 are installed on the side of the backrest 7. In actual use, the user can sit on the first air bag 5 on the seat cushion 4 and lean his back on the second air bag 32 on the backrest 7, so that the first air bag 5 and the second air bag 32 can provide secondary buffering for the user, improving the use effect.

[0035] As shown in Figure 1 and Figure 4As shown, the top of the cushion 4 is provided with a plurality of first air bags 5, two adjacent first air bags 5 and two adjacent second air bags 32 are connected by pipes, and the first air bags 5 and the second air bags 32 are connected by a first flow guide pipe 8, one end of the first flow guide pipe 8 is fixed on the side of the cushion 4, the other end of the first flow guide pipe 8 is fixed on the side of the backrest 7, the inside of the mounting cover 11 is provided with an air pump 28, the air inlet end of the air pump 28 is connected with a breather pipe 13, one end of the breather pipe 13 extends to the outside of the mounting cover 11, and the air outlet end of the air pump 28 is connected with a second flow guide pipe 10, the other end of the second flow guide pipe 10 extends to the outside of the mounting cover 11 and is connected with the side of the first flow guide pipe 8, and an electromagnetic valve 30 is mounted on the side of the second flow guide pipe 10, the air pump 28 and the electromagnetic valve 30 are connected with a control mainboard 29 through wires, in actual use, the air pump 28 can deliver external air into the second flow guide pipe 10 through the breather pipe 13, and then deliver the air into the first air bags 5 and the second air bags 32 through the first flow guide pipe 8, then under the control of the control mainboard 29, the air pump 28 and the electromagnetic valve 30 can be opened and closed according to a preset rule, so that the first air bags 5 and the second air bags 32 can be shrunk and expanded according to the rule, and then the user's buttocks and back can be massaged, so that the user can promote blood circulation of the buttocks and back when sitting for a long time, and the use effect is improved.

[0036] Specifically, in use, the staff controls the electric push rod 23 to extend, the electric push rod 23 pushes the first support rod 3 to rotate, the cushion 4 is lifted, then the staff turns the backrest 7, the backrest 7 is rotated to a preset angle, the user sits on the cushion 4, and then leans back on the backrest 7, when the electric wheelchair travels on a rugged road, the impact force received by the chassis 1 is first transmitted to the buffer spring 26 in the process of being transmitted to the cushion 4, the impact force generated by the bumping of the rugged road is buffered by the buffer spring 26, the impact received by the user is reduced, the use effect is improved, at the same time, the user controls the air pump 28 to work through the control mainboard 29, the air pump 28 delivers external air into the second flow guide pipe 10 through the breather pipe 13, at the same time, the control mainboard 29 controls the electromagnetic valve 30 to open, the air in the second flow guide pipe 10 can be delivered into the first flow guide pipe 8, and then delivered into the first air bags 5 and the second air bags 32 along the first flow guide pipe 8, the user is buffered, at the same time, the control mainboard 29 controls the air pump 28 and the electromagnetic valve 30 to open and close according to a preset rule, the first air bags 5 and the second air bags 32 are regularly inflated and deflated, so that the first air bags 5 and the second air bags 32 can expand and shrink according to the preset rule, and then the user's buttocks and back are massaged, the blood circulation of the user's buttocks and back is promoted, and the use effect is improved.

[0037] Further, as shown in FIG. 6, Figure 1As shown, one end of the two fixed blocks 31 is provided with a strip-shaped limiting plate 9, when the backrest 7 rotates to the preset position, the edge of the strip-shaped limiting plate 9 abuts against the side surface of the backrest 7, so that the backrest 7 is limited by the strip-shaped limiting plate 9, when the user leans back on the backrest 7, the backrest 7 is supported by the strip-shaped limiting plate 9, and then the back of the user is supported by the backrest 7.

[0038] Further, as shown in Figure 1 and Figure 2 each side of the fixed block 31 is connected with an armrest 6, one end of the armrest 6 extends above the cushion 4, when in use, the user can put hands on the armrest 6, so that the user is more comfortable when riding the electric wheelchair.

[0039] Further, as shown in Figure 2 the top of the chassis 1 is further provided with at least one battery slot 20, the battery slot 20 is internally provided with a storage battery 19, the storage battery 19 is connected with the control mainboard 29 through wires, so that the control mainboard 29 is powered by the storage battery 19, and the control mainboard 29 can work normally.

[0040] Further, as shown in Figure 2 the top opening of the battery slot 20 is further provided with a top cover 18, the edge of the top cover 18 is fixed on the chassis 1, the battery slot 20 is covered by the top cover 18, so that the storage battery 19 in the battery slot 20 is protected.

[0041] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A folding electric wheelchair, comprising a chassis (1), characterized in that: The chassis (1) is provided with a walking mechanism at both ends. The top of the chassis (1) is provided with a first receiving groove (2). The two ends of the first receiving groove (2) are rotatably connected with a first support rod (3). A seat cushion (4) is provided above the chassis (1). The tops of the two first support rods (3) extend to the side of the seat cushion (4) and are rotatably connected to the seat cushion (4). A connecting rod (24) is rotatably connected between the two first support rods (3). An electric push rod (23) is rotatably connected to the side of the connecting rod (24). A second receiving groove (17) is also provided on the top of the chassis (1). The second receiving groove (17) has a "T" shaped structure. One end of the second receiving groove (17) is connected to both sides of the first receiving groove (2). A sliding block (22) is provided inside the second receiving groove (17). The other end of the electric push rod (23) is rotatably connected to the sliding block (22). The second receiving groove (17) has grooves (21) on both sides inside. Both ends of the sliding block (22) extend into the grooves (21). A damper (25) is installed at one end inside the groove (21). One end of the damper (25) is fixed on the side of the corresponding sliding block (22). A buffer spring (26) is also sleeved on the side of the damper (25). One end of the buffer spring (26) is fixed to the end of the groove (21), and the other end of the buffer spring (26) is fixed on the side of the sliding block (22). Two fixing blocks (31) are symmetrically installed at one end of the top of the cushion (4). A backrest (7) is rotatably connected between the two fixing blocks (31). Several second airbags (32) are installed on the side of the backrest (7). Several first airbags (5) are installed on the top of the cushion (4). Two adjacent first airbags (5) and two adjacent second airbags (32) are connected by pipes. The first airbags (5) and the second airbags (32) are connected by a first guide pipe (8). One end of the first guide pipe (8) is fixed on the side of the cushion (4), and the other end of the first guide pipe (8) is fixed on the side of the backrest (7). A mounting cover (11) is installed at one end of the top of the chassis (1). An air pump (28) is installed inside the mounting cover (11). An air inlet end of the air pump (28) is connected to an air pipe (13). One end of the air pipe (13) extends to the outside of the mounting cover (11), and a second guide pipe (10) is connected to the outlet end of the air pump (28). The other end of the second guide pipe (10) extends to the outside of the mounting cover (11) and is connected to the side of the first guide pipe (8). A solenoid valve (30) is installed on the side of the second guide pipe (10).

2. The folding electric wheelchair according to claim 1, characterized in that: The walking mechanism includes two pairs of walking wheels (12) set at both ends of the chassis (1). One pair of walking wheels (12) is fixed to the chassis (1) by a steering mechanism, and one end of the other pair of walking wheels (12) is connected to a drive motor (27). The drive motor (27) is fixed inside the mounting cover (11).

3. A folding electric wheelchair according to claim 1, characterized in that: The first receiving groove (2) has a second support rod (15) on both sides inside. The top of the second support rod (15) is rotatably connected to the side of the cushion (4). The first support rod (3) and the second support rod (15) are staggered. A connecting block (14) is rotatably connected to one end of the bottom of each second support rod (15). A strip groove (16) is opened on both sides of the first receiving groove (2). One end of each connecting block (14) extends into the corresponding strip groove (16) and slides in cooperation with the strip groove (16).

4. A folding electric wheelchair according to claim 3, characterized in that: When the bottom of the seat (4) contacts the top of the chassis (1), the first support rod (3) and the second support rod (15) are both located in the first receiving groove (2), and the electric push rod (23) and the connecting rod (24) are both located in the second receiving groove (17).

5. A folding electric wheelchair according to claim 1, characterized in that: Both fixed blocks (31) have a strip-shaped limiting plate (9) installed at one end. When the backrest (7) is rotated to the preset position, the edge of the strip-shaped limiting plate (9) abuts against the side of the backrest (7).

6. A folding electric wheelchair according to claim 1, characterized in that: Each fixed block (31) has an armrest (6) attached to one side, and one end of the armrest (6) extends above the seat cushion (4).

7. A folding electric wheelchair according to claim 1, characterized in that: The mounting cover (11) also houses a control board (29), which is connected to the electric push rod (23), the air pump (28), and the solenoid valve (30) via wires.

8. A folding electric wheelchair according to claim 1, characterized in that: The top of the chassis (1) is also provided with at least one battery slot (20), and a storage battery (19) is installed inside the battery slot (20). The storage battery (19) is connected to the control motherboard (29) through wires. A top cover (18) is provided at the top opening of the battery compartment (20). The top cover (18) covers the opening of the battery compartment (20), and the edge of the top cover (18) is fixed to the top of the chassis (1).

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